suspect, tamerlan tsarnaev is dead. suspect number two, dzhokhar tsnaraev, his younger brother, age 19, still unaccounted for. jennifer griffin is live with our national security view on this from our bureau in washington, d.c. we're told they have ties to chechnya. that they could be russian- born but chechnya according to their ethnicity. they spent some time there at least at a younger age, jennifer. what more do we have on that? >> reporter: that is really interesting. when i heard of the name of the younger one, the one with the white cap who is still on the loose, the name dzhokar was very familiar to me. the dzhokar dudivey first president of chechnya was killed. had a violent death by the russians when he used his satellite phone, two missiles came out of the sky and killed him. i remember being in lebanon at the time and remember when he was killed, he was killed in chechnya on april 21st, which of course is coming up this weekend, this sunday. that made me think if these two are chechen nationalists in some wa